The PageLines Framework offers several Page Templates for you to use when configuring your sections. However we realize that the ones provided either aren't always enough or their names might get confusing. (Ideally, we’d love to allow you to add & rename templates via the Template Editor, but because of a WordPress quirk we can’t. See the WordPress Ticket here.) Until that tiket gets resolved, you will have to add your Custom Page Templates manually.
Once the plugin is activated, go to the folder where the plugin is located. It should be: /wp-content/plugins/pagelines-customize
Inside the pagelines-customize folder there is a file called "page.base.php". Duplicate that file and rename it to
"page.facebook.php" (or change facebook to whatever name you want) Now open the file & change
Template Name: Custom Page
Template Name: Facebook
(or again, whatever name you choose.) Save the file & you should see your new custom page template